Tool-grinding machine



mm' amm@ momma APPLICATION FILE DEC. l?, 1920.'

@fh SEL 3192i 6 SHEETS-SHEET 2.

wi. nu

Tim

H. LUTZ.

TOOL mmnlw MACHINE.

APPLICATION FILED INEC. 17. 1920.

19mm@ 001;. 3L wz@ 6 SHEETS-SHEET 3.

" H. LUTZ.

TOOL GRINDING MACHINE. l APPLlvcAloN FILED Dsc. n, 1920.

imma) BY ff W7 H. LUTZ.

TOOL GRNDNG WIACHI'NE. APPLICATION man 050.17. 920.

Pam/3mm @om 3XL, 11922,

6 SHEETS-SHEET 6.

IN1/Emo@ Lutz h onsutes of '2x/UMH' Shown o mow 5'" im 'fram lgursra'unal View tukPu en zu? v iews MUCH Hw,

indusw mles at mmm-2115s reifer to Simi.-

K DE

tely ground to a predeter-- ereo'fm'e the grinding of ''mef ly mand undwith "ms been impossible to prouponthe class of work to be performed, itis essential that the tools be ground to the angle which has beenpreviously determined as that affordingf the best results tor theparticular kind of work to be accomplished.

.leterringJ to the drawings represents a base having;` a removable head11 secured thereon by means of a screw 12 threaded into a plate 13positioned beneath the inturned flange 14 ot' the base shown in FigureHI. The head 11 is provided at its opposite sides with cylindricalportions having the inner and outer connected end walls 15 and 16respectively. Secured on the inner face ot the wall 15, by. means oiscrews 17, is a ring 18 for supporting the antit'riction bearingcomprising theJ inner ring 1 9 carryingr the balls 20, on which ismounted the outer ring 21 positioned within a recess formed in the endof the drive pulley 22 to support the latter as shown in Figure Hl.Screwed into the end wall 16 is a sleeve like member 23 provided. withnotches 24 on its inner end to receive a suitable tool for turning saidmember .to adjust it to the desired position, the tool being eitherinsertable through an opening 25 or through the opening in the wall 16before the antitriction bearing,y is intherein, said opening 25 beingcovered by nieans o1 a removable plate Q6 held in position byirneans ofscrews 27 as shown in Fi ures lll and 1V. The sleeve 23 is reed at itsouter end to receive the bearing,r 28 which together with the inner ring59 and the balls 30 constitute the anti'iriction bearing tor the shait31 which is tapered at its other end to receive the hub 32 upon whichthe grinding' wheel 33 is mounted. The grinding wheel is held upon thehub bynieans of the inner and outer plate members k34 and 35respectively, which are connected by means ot' screws 36 which also passthrough the flange 37 on the hub 32 as shown in section in Figure IH.nut 33 is screwed onthe end ot the shaft 31 to prevent displacement ofthe hub and the grindinga wheel carried thereby. The inner `lace of theplate 34 preferably recessed as indicated at 33 tion`39on the wall 16t'or the purpose of affording a dust proot' joint between said parts toprotectthe anti-friction bearing supporting the shaft 31. -Theanti-friction bearings for supporting the pulley 22 are protected bymeans of the band 40 having outwardly extending tongues 41 and 42connected by means of screws 43, said band being adapted to overlie andrest upon the rnd)r 13 and the annular tiange on the outer end ot thepulley 22 as shown in Figure lll. As both sides of the head 11 and theparts mounted thereon are of like construction, a

description of the one will suiice for both. The driving pulley 22 issupported entirely independent of the shaft 31 by the`antito receive theannular projec-l friction bearings carried by the rings 18, but at thesame time the pulley serves to drive the shaft by means of a sleeve 44secured upon the shaft within the pulley, said sleeve being providedwith oppositely arranged projections 45 extending between the inwardlyprojecting ribs 46 on the pulley, as shown in Figure X. By means of thisconstruction rotation of the pulley will effect rotation of the shaftand consequently the grinding wheels 33 on the opposite ends of thesha't't. The base or pedestal 10 on its opposite sides beneath thegrinding wheels 33, is provided with guides 47 upon which the slide orcarriage 48 is adjustable up and down by means of a feedy screw 49threaded through an eye supported by the pedestal 10, the lower end ot'said screw being carried by a thrust bearing 51 secured upon the lowerend et' the carriage 48, the upper end ot the screw being journaled in abearing 51 and provided with a bevel gear 52 meshing with a pinion 53upon the inner end of a shaft 54 journaled in bearings 55 and'56suitably supported by the carriage as shown in Figure VIII. is providedwith a wheel 57 by means of which it is conveniently rotated to effectvertical adjustment of the carriage for the purpose ot keeping the workin contact with the grinding wheels. The slide or carriage may be heldin any desired position of adjustnient by means of a clamp bolt 58having a beveled head thereon adapted to engage the vertically disposedguide 47 on the pedestal 10, said bolt being reciprocally mounted uponthe carriage and adapted to be drawn into clamping engagement with theguide by rotation ot a handle'59 threadedly connected with the bolt.Mounted for reciprocal movement upon the carriage 48 is a slide 60having' a downwardly extending eye 61 through which is threaded a feedscrew 62 journaled at its opposite ends in bearings 63 and 64supportedby the carriage as shown in Figure VH. 0n one end of the feedscrew 62 is a bevel pinion 64 meshing,r with a 2gear 65 on a shaft 66upon the outer end ot' which is positioned ay wheel 67 provided with ahandle 68 by means ot' which the wheel is rotated. This mechanism servesto move the slide 60 in opposite directions'beneath the grinding wheel33. Movable transversely upon the slide 60 is a carriage 69 adapted tobe reoiprocated by means o-t' feed screw 70 extending through an eye 71having a downwardly extending portion 72 projecting` into a recessformed in the slide 60. Rotatably mounted upon the upper face 73 of thecarriage 69 is a turn-table 74 adapted to be clamped upon the carriage hmeans ot' bolts 75, the heads ot' which are isposed within an annularrecess 76 formed in the carriage as shown in Figure VH1. The turntable74 is provided with an arcuate por- The outerv end of shaft 54 4votreinto engagement tion 76 having upstiinding guides TT adapted to receivethe segi'nentui siide T8 iis shown in .Figures Y und Vi, the uiideboiiigAoiuiuped iu any de' id position hy iiiezius ot the boite TSE exteiuiinginto the groove Si) 1formed oetweeii the Aguides 'The segmental slide T8if; provided with iz hiterziiiy extending :trui ht eurryingon its: upperhire. iinureiuite under 'ut prolieotioii HZ "formingr :i gui ie *forthetooihoiding siidehioeir?) which is reciproriiii'i' mounted upon the,:trui H1 und pro vided with :in undereut ei'ofiive to receive. theindirect pr iiection i/. rhe portion Sel ot' the siido bioeh isreiuoruhie und forms u rhunpiiu -i'ueruher which ie udiipted to he heidin riuinped posi-tion upon the uuderrut projection Si h i: uieuib: ofthe sereu's 85 und H6 extending through the hloeit into threadedengagement with the rhiuipingj member, The slide hiook 532% is providedwith un upiost Si' adapted to rereive the too*k hoioin ii-:e Stk whichrevu upon the. shouii post und heid against dissecured upon the post. hyiueuns oi' the serene SPL Su i Cup it-mug prevented 'iioiu turningy hyinerme@ ot :i projection 9L) iyiug within u reoefss iiiinu-d in theouter faire of the poet The up iuris e to revoir@ the, upper portion oi:the too im. the rohe being aie-o not/hed tu rereire the opposite edge ot'the tooi ais Shown in Figures T und ifi. hhouid-r or uhutinent 94 isini-ined upon the hoei l.) ut right uugfirs thereto und together withthe hioei; tormS zi .Lieut ifor the toot ifi'iich is ehiniped thereon hyine-uns of hy voire Htl upon the tighteningrr otA the svre'u' Wu whirhis threaded through one. end of the with the tooi post ius Huid srrewbeing pro* vided with u hundir 5?(3 for turnin;r the suine Bjrsupporting 'the ioo iit two different points und phuinLA the ehiuipinfjnieiuher hetweeu these pointu the tool is iirini)v heid in the` desiredpoeition upon the slide und is pr rented i'roui roehing or Sshii'ting;`thereon. vThe Volte is pieeruhiy notched zit 9T to perniit the2grinding' wher to en ejuge the tooi with the end oi the lutterprojeoiod slightly iihore the rohe :ind Suhstuntiuiiy hish with the up9i). VYhe :iriu h1 frziduiiied in defi-refs und minutiund the siide Hiis, provided with u Yfiero point wherein' the operator muy Het the suineto iii-iu;A the tool to the desired :in ie with rospeit to the grindingwheel. ine :aren-(ite portion Th oi' the turntuhi'e is :iiso graduatedin degrees und minutes; :is Shown in Figure "Ji whiie .i Zero pointy isinerriiied upon the hzise oix the= siido TS :indK hy loosening theboitel 'T9 the `Qlide muy he moved to the desired position or :is ouin);degrees und minutes nu muy be. re,- uired to reuse the grinding tile endot the tool to whatever notched ut on-z lShown in Figure :ingle muydetermined upon. The the carriage 69 is also divided into degrees andminutes es indicated in Figure V while the turn-table 743i thereon isprovided with u zero pointuenci hy loosening the boite the turntable muyhe rotated to udjust the suine the desired ziinouut. By means of theturii-tei ie and the two arcuate siides the tool muy berotzited eitherin :i horizontal piene or in vertiezii planes at right angles to eachother, The toot therefore may be moved through :iii oi" the. envies itu'ouid be poeeibie to move it through it it. were mounted Afor universalmovement.

Figures U toi' inchisive indicate the different cuts required inprodueing the finished toni, it being understood that all of thesurfaces which siope 'from the corner point 9S are ueruruteiy ground topredetermined singles, oy reason ot the improved inerhr-nism describedherein.

iiiihiie here, iiiustrzited und described one eiuhodifnent ot myinvention it wiii befunerstood that i to not wish to he limited to thespecific instruction und arrangement, ot parte shown. :is it xviii heapparent that various modifications: muy he fluide in the deiiiiiconstruction und nuiuner ot essemoiing the, parte Without depiu'tin`trom the spirit ot the inreiition npr iii the claims.

have been previously circular portion ot Letters; Patent iu: i. Vin il.tool `i'rindii'ig iuuehinml :i grind ing` u'heeh ii too'i holderudiipt/e to support u tooi in eoutiiet with the adapted to suing' Suidhoider iu eircuiar paths ait right to euch other anti ineiins adapted torotate Suid isist inentioned means.

2. in e 2grinding nieei'iiuer1 u hase a grinding wheel Supported therebya turn-table supported hy they ifzise, am arcuate siide vmounted torotate upon Said turn-tubi@ and :i second nrt-uitte siide mounted torotate upon the hist mentioned Slide and adapted to support ii tool inposition to he ground hy said 'wheei 2%. in :i l friiu'ingi` niioiiinei/u hase, a grinding whee'i supported hy the hase, e our ringe mounted torvertu-:1i adjustment upon the hasta u uiide mounted upon Seid Cerriitgtxii second slide mounted upon the met mentioned siide. ui'iurouute sliderotutuhiy mounted upon the second mentioned slide und iin zii-emite tooihoidingj siie mounted upon the tuut mentioned slide und adapted toysupport u tuoi in position to he groun hy sind wheei.

in :i grinding uuiehine. :i hase, u grindinl;r wheel supported upon thehuso, :i Carriage mounted `for vertieui adjustment upon the hose, uuiide supported hy said miri'iugie. u seroud siiide mounted upon thelast iueutioue i s'iide, e. turn-table mounted upon said secondmentioned Slide, an arcuate slide carried by said turn-table, and a toolholdino' lide adjustable upon the laSt mentioned ende and adapted tosupport a tool in position to be `fround by said wheel.

v.ln a grindingr machine.y a base, a grinding` `wheel supported by 'thebase, a earriage adjustable vertically upon the base7 a turntablesupported by the carriage, said turntableI and its supporting; carriagebeing graduated in degrees and minutes whereby the extent ol rotationot' the table may be determined7 an arcuate slide supported b said;table. said table and slide being graduated to pe'rn'iit the latter tobe eet at a predetermined angle and a Second tool holdingg areuate slide.mounted upon the tiret ioentioned areuate slide` lSaid armate slidesbeing graduated to permit adjustn'ient ol the one upon the other to anydesired single.

t). Aii. a grinding machine, a basev a earriatgje mounted thereon. atool holdingl slide mounted upon the earriagfer` an upstanding poetupon' the slide, a removable eap upon the pont adapted to receive oneportion ot the tool, the opposite portion ot which is Supported by seidslide, and a elanip hurt rounding` the post und engaging the tooy tohold it in fixed position upon said nap1 and said slide i'. ,tu ai'naehine ol the dans deseribed, a tool holding lglide haring a postextending' upwardly thereon, a removable cap upon the post provided witha notch adapted to receive one end or' the tool, said slide beingprovided with a shoulder 'forming` a set for the tool7 and means adaptedto elalnp the toolupon said cap and said shoulder.

8. ln a machine of the class described, a tool holding' slide haringr apost extendinzgr upwardly thereon, an abutment upon said slide forming aseat. for the tool, a removable eap upon the post provided with a notchadapted to reeeire the upper end ,of the tool., a elaniping yoke for thetool surroundinx;r said post and held against displacement by said eap,and a screw tor clamping' lsaid yoke upon said to l.

l). ln a maehine ot' the Class describedv a tool holding yslide having`an. abutment formed upon' one side thereof, a poSt eX- tendinp upwardlyupon the slide in linev with the abutment/A' removable eap secured witha notch-adapted to receive the upper end ol" the. tool, a meniberadapted to engage the tool between the abutment and said removable eapand a serew extending through said member and engaging" said post toelamp l@aid member upon the tool.

ln testimony ht-reetl l allix my signature.

HANS lll l'lZ.

upon the uppexfen'd of the post provided.

